Electric cable.



No. 852,778. PATENTED MAY 7, 1907. R. DUNGER. ELECTRIC CABLE. APPLIUATION FILED s319119, 1.904'. RBNBWED 00123, 1906.

lllllll UNITED sTATEs PATENT OFFICE- ROBERTI DUNGER, CHICAGO, ILLINOIS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE ELECTRIC LOOP AND CABLE COMPANY, A CORPORATION.' OF NEW JERSEY.

i 5 ing the circuits;

Y F1 of ELECTRIC CABLE.

Specification of Letters Patent. Anplihxatipnled September 19, 1904. Renewed October 3, 1906. Serial No. 387,209.

Patented May 7, 1907.

My invention relates to electric cables, and

has for its object the reduction of a new and improved electric cab graph, and other electric appliances.

My invention is illustrated in the accompanying drawings, .wherein Figure 1 is a diagrammatic view illustrat- 2 is a. portion of the cable in part section, r usitrating my invention; Fig. 3 1s a cross Seetlontalien on line 3 3 of Fig. 2; Fig. 4 is, aplan view of one form of receiving instrument aty the end of the table; Fig. 5 1s a section taken on line 5-5 of Fig; 4 ..6is a sectional view taken on line 6 -6 1g. 2. Like letters refer the several 'gures-f the hk My invention is. adapted to be used in any litllatOIl WhereA it. desired to transmit elec'- trical impulses; to. a. distant point, and is particularly adapted for submarine cables and In carryingg'out my invention, I divide the line into a series of sections, as shown 'at A, A1, A, A, etc., Fi 1'the two end sections beingprovided Wir sources of electricsupply, B and C, off any suitable description.

he conduQtQlIs oiture-'adjacent sections are Wound. u on a. core,l D, thus forming' coils E, and: ft Seen by'this that the conductorfi's, v v.decl up into a series of sections with induci'rijonl ,co/ils, as it were, connecting the adjacent sections. Y

Any desired number of sections and induction coils may jbehgsed, depending'upon the le th of the .linee/the conditions presented, alii? the results ;desred. i

Under some conditions I run a continuous line or conductor G in the cable with the broken orsectional line, and in this case a portion of this conductor is wound uponeach core D so as to form a coil G thereon. circuit is preferably grounded, and is yprovided `Wi'.h a source of electric supply. A current is therefore 4iowing through this circuit When the device in operation, and this current-.acts on vthe iron cores which'cores 'are le for-telephone, teleto like vparts throughout l This' b at thel same time acted upon by another current, namely, the current bywhich the message is communicated. The coils on the core D are preferably located. alon the length of the core so as to permit its iamete` to be' made as small as possible. When vthe device is used as a submarine cable the conductors are located within 'the cable, and are surounded b suitable insulati shown in Fig. 6, and the cores and the' various coils thereon are also located within the'cable and surroundedb insulatin ,material, as shown in Figs. 2 anri, ythe cab ebeing provided with a protecting sheath, as illustrated. It is, of course, evident that the cable can be of any desired form, andthe core and various coils'simpl `produce an enlargement, as illustrated in Iyig. 2. It will thus be seen that these sections and coils may be multiplied to any desired extent.

As illustrated in Fi 1, I have shown diagammatically a telep one apparatus H .and

1 ateach end, and also a tele rraphic apparatus at each end; a double po e switch mayr be employed to change the circuit from the telegraphic instrument-to the 'telephonie 1nmaterial, as.

8. strument, althou h 'the circuits may be afrranged so' that ythis switch is not necessary, iti

being shown here for purposes of illustratlon.

I prefer to associate with the telegra hic instrument a telephone receiver J in the -p ace of the ordinary sounder, as this-is more sensitive. en the telegraphic circuit breaker K is operated `it-sends impulses along the line and they act upon the telephone receiver and causeits diaphra m to move, and the operator by the sound can thus 'distinguish the' message just the ,sameas with theordinary A sounder.

In some instances` 'it may be desirable 'o'r thc operator to use an ordinary headbandreceiver instead of having the receiver placed uponthe instrumentas herein shown.

In Figs. 4 and 5 I have illustrated the ordinary telegraphicinstrument or key K with the tele hone receiver J fastened to the same base. By means of this device the electrical impulse whether from breakingthe circuit, as

y 4means of' the telegraph mstru-ment, Aor va yA the induction' coils, and is thus transmitted from one section ofthe conductor to the other until the terminal 1reachedwhere the current, as b `meai1`s of the telehone instrument, issmu tiplied in intensityi upon it acts upon the appropriate instrument and a telegraphic, telephonie, or other message is delivered. The telegraphic instruments are each provided with the switches K1 in the ordinary way, the switch at the sending station being openwhen the device is in o eration, and that at the receiving station c osed.

I have described in detail a particular construction embodying my invention7 but it is, of course, evidentthat the parts may be varied in `many particulars and I, therefore, do not limit myself to the construction shown.

I claim: 1. The combination. with a series of electrical conductors formed into continuous ads jacent circuits,` a part of each two adjacent circuits being wound upon a common core, of a continuous circuit associated therewith having a part wound. upon each of said cores.

2. AThe combination with a transmitting and receiving instrument located at distant points of a connecting conductor made up of a series of disconnected looped circuits, parts of each two adjacent circuits wound upon a metallic core, said cores distributed at intervals along the line between the instruments, and a continuous circuit associated with said disconnected circuits and `.having a part there* of wound around each of said cores.

seams 3. The combination with two sets of telcphone instruments and two sets of telegraph instruments of a Vconnecting conductor made u of a series of disconnected looped circuits p aced end to end and electrically insulated from each other, parts of each two adjacent circuits being wound upon a metallic core so as to form coils with the ends abutting, and a continuous conductor associated with said looped circuits, and having a part thereof wound around each of said cores, said cores distributed at intervals along the line lbetween the instruments and embedded in insulating material so asto `form a continuous cable, and means for alternately connecting the tele hone and telegraph instruments with sai conductor. l

4. An electric cable madeup lot a series of disconnected conductors,` portions of the adjacent sections o`f each conductor being wound upon a common core, a continuous conductor extending the length of the cable and having a portion wound around each of said cores, a source of electric supply in said continuous conductor, the said conductors and cores cmbodied in a continuous cable.

' ROBERT DUNGER,

, Witnesses:

HOMER L. KRAFT, PERCIVAL W. ORMWAY. 

